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68249710 = 2519359209
BaseRepresentation
bin1000001000101…
…10100001101110
311202102110000001
410010112201232
5114432442320
610434454514
71456053514
oct404264156
9152373001
1068249710
1135586021
121aa3443a
13111a7c59
1490c84b4
155ed220a
hex411686e

68249710 has 16 divisors (see below), whose sum is σ = 129315600. Its totient is φ = 25862976.

The previous prime is 68249689. The next prime is 68249723. The reversal of 68249710 is 1794286.

It is a super-3 number, since 3×682497103 (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68249710.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179415 + ... + 179794.

It is an arithmetic number, because the mean of its divisors is an integer number (8082225).

Almost surely, 268249710 is an apocalyptic number.

68249710 is a deficient number, since it is larger than the sum of its proper divisors (61065890).

68249710 is a wasteful number, since it uses less digits than its factorization.

68249710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359235.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 68249710 is about 8261.3382693121. The cubic root of 68249710 is about 408.6645224599.

The spelling of 68249710 in words is "sixty-eight million, two hundred forty-nine thousand, seven hundred ten".

Divisors: 1 2 5 10 19 38 95 190 359209 718418 1796045 3592090 6824971 13649942 34124855 68249710